So do you really think those two glasses of red wine are healthy for you? Actually, one drink can reduce your chances of heart disease, but two can increase your risk of breast cancer by 25 percent. Here are some more examples, compiled by Fitness magazine, of common health myths.

Myth: Five hours of sleep is fine.
Reality check: Getting fewer than seven hours a night will make you moody, irritable and less productive. People who get five hours a night have 15 percent higher levels of ghrelin, which stimulates appetite.

Myth: It’s low-carb, so it must be healthy.
Reality check: Some low-carb foods have more calories than the original.

Myth: My bad cholesterol is high, but I don’t have to worry because my good cholesterol is high, too.
Reality check: A high LDL (bad) cholesterol reading can outweigh the benefits of a high HDL (good) cholesterol. The further you are from the optimal LDL cholesterol level, the less likely a high HDL level will protect you.

Myth: I don’t have to work out; I have kids to chase after.
Reality check: More intense, sustained movement lasting 30 minutes or more provides the maximum health and weight-loss benefits.

Myth: But I’m just big-boned.
Reality check: It’s hard to hear, but if your body mass index (BMI) is 25 percent or higher, you may need to lose 5 percent to 10 percent of your weight.